When using typesPrefix: "I" we want to avoid prefix for enum by adding "enumPrefix": false

[veeramarni]

Here's a well-structured GitHub issue you can log for graphql-codegen-typescript-validation-schema:

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Bug Report: enumPrefix and typesPrefix incorrectly applies to enum imports

Description

When using typesPrefix: "I" with importFrom, the generated Zod schemas incorrectly import enums with the I prefix, even though:

1. The source TypeScript file (specified in importFrom) generates enums without the prefix
2. enumPrefix: false is explicitly set in the configuration
3. enumsAsTypes: true has been tried as an alternative

This causes a mismatch between the generated types and the Zod schema imports, resulting in TypeScript errors.

Expected Behavior

When typesPrefix: "I" is set:

• Interfaces/types should be imported as IMyType
• Enums should be imported as MyEnum (without the I prefix)

The enumPrefix: false configuration should prevent the prefix from being applied to enum imports.

Current Behavior

Enums are incorrectly imported with the I prefix:

// Generated Zod file
import type { IMyEnum } from './generated-models'; // ❌ Wrong

// But the actual generated-models file has:
export enum MyEnum { ... } // Without 'I' prefix

This causes TypeScript error:

Module '"./generated-models"' has no exported member 'IMyEnum'

Configuration

generates:
  ./src/generated/graphql-types.ts:
    plugins:
      - typescript
    config:
      typesPrefix: I
      enumsAsTypes: false
      
  ./src/generated/graphql-zod.ts:
    plugins:
      - typescript-validation-schema
    config:
      schema: zod
      importFrom: ./graphql-types
      typesPrefix: I
      enumPrefix: false  # ❌ Not working
      enumsAsTypes: true # ❌ Also tried this, doesn't help
      withObjectType: false
      notAllowEmptyString: true
      useTypeImports: true
      scalarSchemas:
        DateTime: z.string().datetime()
        Date: z.string().date()
        JSON: z.record(z.unknown())

GraphQL Schema

enum UserRole {
  ADMIN
  USER
  GUEST
}

input CreateUserInput {
  name: String!
  role: UserRole!
}

Generated TypeScript Types (graphql-types.ts)

// ✅ Enum generated WITHOUT prefix (correct)
export enum UserRole {
  Admin = 'ADMIN',
  User = 'USER',
  Guest = 'GUEST'
}

// ✅ Interface generated WITH prefix (correct)
export interface ICreateUserInput {
  name: string;
  role: UserRole;
}

Generated Zod Schema (graphql-zod.ts)

import { z } from 'zod';
import type { IUserRole } from './graphql-types'; // ❌ Wrong! Should be UserRole
import type { ICreateUserInput } from './graphql-types'; // ✅ Correct

export const CreateUserInputSchema = z.object({
  name: z.string(),
  role: z.nativeEnum(IUserRole) // ❌ TypeScript error: IUserRole doesn't exist
});

Expected Generated Zod Schema

import { z } from 'zod';
import type { UserRole } from './graphql-types'; // ✅ Correct - no prefix
import type { ICreateUserInput } from './graphql-types'; // ✅ Correct - with prefix

export const CreateUserInputSchema = z.object({
  name: z.string(),
  role: z.nativeEnum(UserRole) // ✅ Works correctly
});

Environment

• graphql-codegen-typescript-validation-schema version: [INSERT YOUR VERSION]
• @graphql-codegen/cli version: [INSERT YOUR VERSION]
• @graphql-codegen/typescript version: [INSERT YOUR VERSION]
• Node version: [INSERT YOUR VERSION]
• Package manager: npm/yarn/pnpm

Reproduction

1. Configure codegen with typesPrefix: "I" in the typescript plugin
2. Configure typescript-validation-schema with importFrom pointing to the types file
3. Set enumPrefix: false or enumsAsTypes: true
4. Generate code
5. Observe that enum imports have the I prefix in the Zod file

Workarounds Attempted

1. ✅ Tried: Setting enumPrefix: false - Doesn't work
2. ✅ Tried: Setting enumsAsTypes: true - Doesn't work
3. ✅ Tried: Setting both together - Doesn't work
4. ⚠️ Current workaround: Manually find/replace enum imports after generation

Proposed Solution

The typescript-validation-schema plugin should respect the enumPrefix configuration or provide a separate configuration option like enumImportPrefix that defaults to false when enumPrefix: false is set.

Alternatively, the plugin could:

1. Check if the imported type is an enum
2. Apply typesPrefix only to non-enum types
3. Or provide a skipPrefixForEnums option

Additional Context

This issue makes it difficult to use a consistent naming convention where:

• Interfaces have prefixes (e.g., IUser)
• Enums don't have prefixes (e.g., UserRole)

This is a common TypeScript convention and the @graphql-codegen/typescript plugin supports it correctly with enumPrefix: false, but typescript-validation-schema doesn't respect this setting when importing.

Related Issues

• Similar to how typesPrefix works in @graphql-codegen/typescript
• May be related to how imports are generated in the plugin

[tobiasdiez]

Similar problem with "useTypeImports": true but "enumsAsTypes": false: the enum is now only type-imported but still referenced in the z.enum call, leading to actual runtime/bundler errors (previuosly reported in #614)